Giter VIP home page Giter VIP logo

tiny_gp's Introduction

Tiny Genetic Programming in Python

A minimalistic program implementing Koza-style (tree-based) genetic programming to solve a symbolic regression problem.

tiny-gp.py is a basic (and fully functional) version, which produces textual output of the evolutionary progression and evolved trees.

tiny-gp-plus.py displays dynamic graphs of error and mean tree size (size = number of nodes), has a bloat-control option, and produces nicer, graphic output (you'll need to install https://pypi.org/project/graphviz/).

Symbolic Regression using GP
Objective Find an expression with one input (independent variable x), whose output equals the value of the quartic function x4 + x3 + x2 + x + 1
Function set add, sub, mul
Terminal set x, -2, -1, 0, 1, 2
Fitness Inverse mean absolute error over a dataset of 101 target values, normalized to [0,1]
Paremeters POP_SIZE (population size), MIN_DEPTH (minimal initial random tree depth), MAX_DEPTH (maximal initial random tree depth), GENERATIONS (maximal number of generations), TOURNAMENT_SIZE (size of tournament for tournament selection), XO_RATE (crossover rate), PROB_MUTATION (per-node mutation probability)
Termination Maximal number of generations reached or an individual with fitness = 1.0 found
Evolved solution Another evolved solution
GPTree GPTree2
Bloat control No bloat control
GP run GP run

tiny_gp's People

Contributors

moshesipper avatar

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    ๐Ÿ–– Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. ๐Ÿ“Š๐Ÿ“ˆ๐ŸŽ‰

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google โค๏ธ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.